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Montpellier had gone into the final as favourites after finishing the league season at the top of the stack, while Castres, who faced Tigers in last season's European Champions Cup pool stages, had to go through the play-offs after finishing sixth.

Tigers' head coach Matt O'Connor has said that he wants to bring Mafi back to Welford Road to help strengthen his back-five resources for the coming season. The Tonga international played 81 times for Tigers in a spell at the club from 2010-2014.